1.5ct Amethyst (Round, 7.85×7.85mm, Violet) vs 2ct Diamond (Round, 8.19×8.19mm, White)
Quick summary: When looked from above (face-up position), 2ct Diamond (8.19×8.19mm, round cut) appears 9% larger than 1.5ct Amethyst (7.85×7.85mm, round cut). See below how they compare side-by-side on a ring and finger.
| 1.5ct Amethyst (round cut) |
vs
|
2ct Diamond (round cut) |
|
violet |
|
|
| 7.85×7.85 mm | 8.19×8.19 mm | |
| actual size | ||
|
|
|
|
|
||
Actual size is set for screen
|
Ring:
Skin tone:
Ring width: 3.0 mm
|
|
64 mm |
|
|
|||||||||||||||||
|
|||||||||||||||||||||
Actual sizes of
1.5ct Amethyst Round (7.85×7.85mm, Violet)
and
2ct Diamond Round (8.19×8.19mm, White)
as they would appear on a ring and finger.
Adjust the ring and finger size to get an idea of how these gemstones would look on your finger.
Where to buy?
For certified gemstones, high-end gemstone jewelry, and birthstone jewelry, see Blue Nile
Face-up Size
All things being equal, Diamond will face-up smaller than Amethyst for a given
carat weight, because it has higher specific gravity
(3.52 vs. 2.65 - this means it's "heavier" compared to Amethyst of the same size). Face-up size also depends heavily on the proportions of the cut.
Face-up area is a measure of the size of the gem when viewed from above (as set in a ring). It tells you how big the gem is at the girdle plane.
Face-up area is a measure of the size of the gem when viewed from above (as set in a ring). It tells you how big the gem is at the girdle plane.
| 1.5 Ct Amethyst (Round) | 2 Ct Diamond (Round) | |
| 7.85×7.85 mm | vs | 8.19×8.19 mm |
| 48.4 mm² | 52.68 mm² |
| 1.5ct Amethyst Round (7.85×7.85mm) | |
| 2ct Diamond Round (8.19×8.19mm) | |
| Difference: 9% (4.28 mm²) |
2ct Diamond (Round, 8.19×8.19mm) has approx. 9% more face-up area than 1.5ct Amethyst (Round, 7.85×7.85mm).
Popular comparisons:
- 1.5ct Amethyst (Round, Violet, 7.85 x 7.85) vs. 2ct Amethyst (Round, Violet, 8.64 x 8.64)
- 1.5ct Amethyst (Round, Violet, 7.85 x 7.85) vs. 1ct Diamond (Round, White, 6.5 x 6.5)
- 1.5ct Amethyst (Round, Violet, 7.85 x 7.85) vs. 1ct Emerald (Emerald, Green, 7.28 x 5.39)
- 1.5ct Amethyst (Round, Violet, 7.85 x 7.85) vs. 2ct Amethyst (Cushion, Violet, 8.08 x 8.08)
- 1.5ct Amethyst (Round, Violet, 7.85 x 7.85) vs. 0.5ct Diamond (Round, White, 5.16 x 5.16)
- 1.5ct Amethyst (Round, Violet, 7.85 x 7.85) vs. 1ct Ruby (Round, Red, 5.98 x 5.98)
- 1.5ct Amethyst (Round, Violet, 7.85 x 7.85) vs. 1ct Diamond (Round, Dark Violet, 6.5 x 6.5)
- 1.5ct Amethyst (Round, Violet, 7.85 x 7.85) vs. 1.5ct Diamond (Round, White, 7.44 x 7.44)